NASA satellite gets confused by a foggy morning.

On November 8, 2026, NASA's Terra satellite and NOAA's NOAA-21 spacecraft captured two images of the same river valleys in the Appalachian region. The morning shot from MODIS showed a thick blanket of white fog filling the branching valleys, while the afternoon image from VIIRS, using false-color, revealed the same area clear, with dark blue rivers and bright green autumn vegetation. The story is about the seasonal formation of valley fog, a common occurrence in autumn, triggered by cool nights that cause moisture to condense near the ground. The technology involved is routine Earth observation from long-established satellite instruments, and the 'news' is essentially a beautiful weather report. The takeaway: NASA's billions in orbital hardware are being used to confirm what anyone with a window in Kentucky already knows—sometimes the morning is foggy, and then the sun comes out.